:root{
  --bg:#0b0f17;
  --bg2:#0f1624;
  --card:#121a2b;
  --text:#e6eaf2;
  --muted:#aeb7c8;
  --line:#26314a;
  --accent:#8bd3ff;
  --accent2:#b5ffcc;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --max: 1100px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;max-width:100%;overflow-x: hidden;}
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color:var(--text);
  background: radial-gradient(1200px 700px at 15% 10%, rgba(139,211,255,.25), transparent 60%),
              radial-gradient(900px 600px at 85% 15%, rgba(181,255,204,.18), transparent 55%),
              linear-gradient(180deg, var(--bg), #070a10 65%);
  line-height:1.55;
}

a{color:var(--accent); text-decoration:none}
a:hover{text-decoration:underline}
code{background:rgba(255,255,255,.06); padding:.15rem .35rem; border-radius:8px; border:1px solid rgba(255,255,255,.08)}
pre{margin:0}

.container{max-width:var(--max); margin:0 auto; padding:28px 18px}
.site-header{padding:18px 0 8px}
.topline{display:flex; align-items:center; justify-content:space-between; gap:14px; flex-wrap:wrap}
.brand{display:flex; align-items:center; gap:14px}
.logo{
  width:44px;height:44px;border-radius:14px;
  display:grid;place-items:center;
  background: linear-gradient(135deg, rgba(139,211,255,.22), rgba(181,255,204,.14));
  border:1px solid rgba(255,255,255,.10);
  box-shadow: var(--shadow);
  font-weight:800; letter-spacing:.5px;
}
h1{margin:0; font-size:1.15rem}
.subtitle{margin:4px 0 0; color:var(--muted); font-size:.95rem}

.nav{display:flex; gap:14px; flex-wrap:wrap}
.nav a{color:var(--muted); font-weight:600; font-size:.95rem}
.nav a:hover{color:var(--text); text-decoration:none}

.hero{display:grid; grid-template-columns: 1.2fr .8fr; gap:18px; margin-top:18px; align-items:stretch}
@media (max-width: 920px){ .hero{grid-template-columns:1fr} }

/* ===============================
   Teaser image responsive fix
   =============================== */
.teaser,
.teaser img,
img.teaser {
    display: block;
    max-width: 100%;
    width: 100%;
    height: auto;
    margin: 0 auto;
    padding-top: 1rem;
    box-sizing: border-box;
}

/* ===============================
   Optional: constrain max visual size
   (prevents it from looking huge on
   wide screens)
   =============================== */
.teaser {
    max-width: 960px;   /* adjust: 720 / 800 / 960 */
    padding: 0 16px;    /* small side padding for mobile */
}

/* ===============================
   Safety: images should never
   overflow containers
   =============================== */
img {
    max-width: 100%;
    height: auto;
}

.tag{
  display:inline-block;
  padding:.25rem .6rem;
  border:1px solid rgba(255,255,255,.14);
  border-radius:999px;
  color:var(--muted);
  font-weight:600;
  font-size:.85rem;
  background: rgba(255,255,255,.04);
}

h2{margin:12px 0 10px; font-size:2.05rem; line-height:1.15}
.lead{color:#d6dcee; font-size:1.05rem}
.note{color:var(--muted); font-size:.92rem; margin-top:14px}

.cta{display:flex; gap:10px; flex-wrap:wrap; margin-top:14px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:.65rem 1rem;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  color:var(--text);
  font-weight:700;
  box-shadow: 0 8px 18px rgba(0,0,0,.22);
}
.btn:hover{transform: translateY(-1px); text-decoration:none}
.btn.primary{
  background: linear-gradient(135deg, rgba(139,211,255,.30), rgba(181,255,204,.18));
  border-color: rgba(139,211,255,.35);
}
.btn.small{padding:.45rem .75rem; border-radius:12px; font-weight:700; font-size:.92rem}

.metrics{display:grid; grid-template-columns: repeat(3, 1fr); gap:12px; margin-top:16px}
@media (max-width: 620px){ .metrics{grid-template-columns:1fr} }
.metric{
  padding:12px 12px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.04);
}
.metric-k{font-size:1.35rem; font-weight:800}
.metric-v{color:var(--muted); font-size:.92rem}

.section{padding:28px 0}
.section.alt{background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.0)); border-top:1px solid rgba(255,255,255,.05); border-bottom:1px solid rgba(255,255,255,.05)}
.section h2{font-size:1.65rem}

.card{
  background: rgba(18,26,43,.75);
  border: 1px solid rgba(255,255,255,.10);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-body{padding:16px 16px}
.authors{color:#d6dcee; margin:0}
.affil{color:var(--muted)}
.links{display:flex; gap:10px; flex-wrap:wrap; margin-top:12px}
.pill{
  padding:.35rem .65rem;
  border-radius: 999px;
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color:var(--muted);
  font-weight:700;
  font-size:.9rem;
}
.pill:hover{color:var(--text); text-decoration:none}

.grid2{display:grid; grid-template-columns:1fr 1fr; gap:14px; margin-top:14px}
@media (max-width: 900px){ .grid2{grid-template-columns:1fr} }

.grid3{display:grid; grid-template-columns: repeat(3, 1fr); gap:14px; margin-top:14px}
@media (max-width: 900px){ .grid3{grid-template-columns:1fr} }

.steps{margin:10px 0 0 1.1rem}
.steps li{margin:.4rem 0}
.bullets{margin:.4rem 0 0 1.1rem}
.bullets li{margin:.25rem 0}

.big{font-size:1.8rem; font-weight:900; margin:.2rem 0}
.small{color:var(--muted); font-size:.95rem}
.mt{margin-top:20px}

.table-wrap{overflow:auto; border-radius: var(--radius); border:1px solid rgba(255,255,255,.10)}
table{width:100%; border-collapse:collapse; min-width:520px; background: rgba(0,0,0,.12)}
th,td{padding:10px 12px; border-bottom:1px solid rgba(255,255,255,.08); text-align:left}
th{color:#dfe6f5; font-weight:800; background: rgba(255,255,255,.04)}
tr:last-child td{border-bottom:0}

.pdf iframe{width:100%; height:680px; border:0; border-radius: 14px; margin-top:10px; background:rgba(0,0,0,.2)}
@media (max-width: 620px){ .pdf iframe{height:520px} }

.codeblock{
  padding:14px;
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  background: rgba(0,0,0,.18);
  overflow:auto;
}

/* ===============================
   Responsive BibTeX block
   =============================== */
.bibtex,
pre,
pre code {
    white-space: pre-wrap;        /* allow wrapping */
    word-wrap: break-word;        /* legacy support */
    overflow-wrap: anywhere;      /* modern browsers */
    overflow-x: auto;
    max-width: 100%;
    box-sizing: border-box;
}

/* ===============================
   BibTeX visual styling
   =============================== */
.bibtex {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 14px 16px;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* ===============================
   Prevent copy button overlap
   =============================== */
.bibtex-wrapper {
    position: relative;
    max-width: 100%;
    overflow: hidden;
}

/* ===============================
   Mobile optimization
   =============================== */
@media (max-width: 768px) {
    .bibtex {
        font-size: 0.85rem;
        padding: 12px;
    }
}

.callout{
  margin-top:16px;
  padding:12px 14px;
  border-radius: var(--radius);
  border: 1px dashed rgba(139,211,255,.35);
  background: rgba(139,211,255,.06);
  color:#dbeeff;
}

.footer{margin-top:16px; padding-top:10px; border-top:1px solid rgba(255,255,255,.08)}
.dot{margin:0 .55rem; color:rgba(255,255,255,.25)}